Home / 15,277.56-21,083.40-8,471.45

Finding the Fourth Proportional to 15,277.56, 21,083.40 and 8,471.45

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Solution

The fourth proportional to 15,277.56, 21,083.40 and 8,471.45 is: 11,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,277.56 : 21,083.40 = 8,471.45 : x
  2. Step 2: Convert to fraction form
    15,277.56/21,083.40 = 8,471.45/x
  3. Step 3: Cross multiply
    15,277.56x = 21,083.40 × 8,471.45
  4. Step 4: Simplify right side
    15,277.56x = 178,606,968.93
  5. Step 5: Solve for x
    x = 178,606,968.93/15,277.56
  6. Step 6: Final answer
    x = 11,690.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.